docs/changes.xml: Add 1.34.0 changelog entries

Signed-off-by: Andrew Clayton <a.clayton@nginx.com>

Author: ac000

docs/changes.xml

@@ -9,7 +9,7 @@
                 unit-python unit-python2.7
                 unit-python3.4 unit-python3.5 unit-python3.6 unit-python3.7
                 unit-python3.8 unit-python3.9 unit-python3.10 unit-python3.11
-                unit-python3.12
+                unit-python3.12 unit-python3.13
                 unit-go
                 unit-perl
                 unit-ruby
@@ -18,7 +18,7 @@
                 unit-jsc19 unit-jsc20 unit-jsc21
                 unit-wasm"
          ver="1.34.0" rev="1"
-         date="" time=""
+         date="2024-12-19" time="18:00:00 +0000"
          packager="Nginx Packaging <nginx-packaging@f5.com>">
 
 <change>
@@ -31,9 +31,28 @@ NGINX Unit updated to 1.34.0.
 
 
 <changes apply="unit" ver="1.34.0" rev="1"
-         date="" time=""
+         date="2024-12-19" time="18:00:00 +0000"
          packager="Nginx Packaging &lt;nginx-packaging@f5.com&gt;">
 
+<change type="feature">
+<para>
+initial OpenTelemetry (OTEL) support. (Disabled by default).
+</para>
+</change>
+
+<change type="feature">
+<para>
+support for JSON formatted access logs.
+</para>
+</change>
+
+<change type="bugfix">
+<para>
+tweak the Perl language module to avoid breaking scripts in some
+circumstances.
+</para>
+</change>
+
 </changes>
 
 
@@ -63,7 +82,7 @@ NGINX Unit updated to 1.33.0.
 
 
 <changes apply="unit" ver="1.33.0" rev="1"
-         date="" time=""
+         date="2024-09-17" time="18:00:00 +0000"
          packager="Nginx Packaging &lt;nginx-packaging@f5.com&gt;">
 
 <change type="feature">